Analysing power A_y in the reaction p(pol) p --> p p eta close to threshold

Measurements of the eta meson production with a polarised proton beam in the reaction p(pol) p --> p p eta have been carried out at an excess energy of Q = 40 MeV. The dependence of the analysing power A_y on the polar angle theta^*_q of the eta meson in the center of mass system (CMS) has been s...

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Published inarXiv.org
Main Authors Winter, P, H -H Adam, Bauer, F, Budzanowski, A, Czyzykiewicz, R, Goetz, T, Grzonka, D, Jarczyk, L, Khoukaz, A, Kilian, K, Kolf, C, Kowina, P, Lang, N, Lister, T, Moskal, P, Oelert, W, Quentmeier, C, Rozek, T, Santo, R, Schepers, G, Sefzick, T, M Siemaszko, Smyrski, J, Steltenkamp, S, Strzalkowski, A, Wolke, M, Wuestner, P, Zipper, W
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 21.11.2002
Subjects
Dependence
Eta-mesons
Particle production
Proton beams
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Summary:Measurements of the eta meson production with a polarised proton beam in the reaction p(pol) p --> p p eta have been carried out at an excess energy of Q = 40 MeV. The dependence of the analysing power A_y on the polar angle theta^*_q of the eta meson in the center of mass system (CMS) has been studied. The data indicate the possibility of an influence of p- and d-waves to the close to threshold eta production.
ISSN:2331-8422
DOI:10.48550/arxiv.0210016